US1755865A - Coupling circuits - Google Patents

Coupling circuits Download PDF

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Publication number
US1755865A
US1755865A US301331A US30133128A US1755865A US 1755865 A US1755865 A US 1755865A US 301331 A US301331 A US 301331A US 30133128 A US30133128 A US 30133128A US 1755865 A US1755865 A US 1755865A
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US
United States
Prior art keywords
grid
amplifier
amplifiers
anode
oscillatory circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US301331A
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English (en)
Inventor
Henry R Butler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US301331A priority Critical patent/US1755865A/en
Priority to FR680450D priority patent/FR680450A/fr
Application granted granted Critical
Publication of US1755865A publication Critical patent/US1755865A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only

Definitions

  • My invention relates to improved means whereby the input circuit of an electron discharge amplifier, and particularly a push-pull amplifier may be connected to a supply osclllation generator. It has for its purpose to provide coupling means whereby the above mentioned connection can be made without encountering undesirable effects, which will later be pointed out, and which result from the use of coupling means of known form.
  • the purpose of my invention is to provide means whereby the desired coupling may be efiected without encountering the disadvantages mentioned-and which has the further advantage that a constant alternating electromotive force may be supplied to the grid, or grids, of the amplifier over a.
  • an electron discharge oscillation generator comprising an electron discharge device 1 of the usual three element type having an oscillatory circuit comprising parallel connected branches 2 and 3.
  • the branch 2 of the oscillatory circuit comprises an inductance which may comprise that of the usual variometer.
  • the branch 3 comprises a plurality of series I connected condensers 4, 5 and 6 having values adJusted as will later be explained While the entire capacity of the oscillatory circuit is preferably included in the branch 3 additional capacity may, of course, if desired, be connected in shunt with the oscillatory circuit as is indicated at 3. His oscillatory circuit is connected in the usual way between the grid and anode of the discharge device 1 through the usual blocking condenser 7. The anode circuit of the oscillation gerurator is energized from a source of potential-'8 example, as a radiating system.
  • the anode circuit of the amplifiers is energized by means of a suitable energy source 3 connected between the midpoint of the primary winding of transformer 12 and the cathode of the electron discharge devices in series with a suitable reactor 15.
  • a suitable energy source 3 connected between the midpoint of the primary winding of transformer 12 and the cathode of the electron discharge devices in series with a suitable reactor 15.
  • an electron discharge device 14 is utilized for the purpose of'modulating the high frequency currents produced.
  • the space between'the anode and cathode of this device is connected in shunt with the modulation reactor 15 and the source 13 in a manner such that the anode circuit of this device and those of the amplifiers are encrgized from the same source.
  • Voice or other signal potential will be supplied to the grid of this device through a suitable transformer 16 and will thereby be caused to modulate the high frequency current produced by the oscillation generator 1 in the manner well known in the art.
  • Suitable grid leak resistance 18, 19 and 20 are connected between each of the grids of the devices 1, 10 and 11 respectively in series with the usual choke coil.
  • the capacity of the oscillatory circuit is divided into a number of separate condensers which are connected in series with each other and in shunt with the variometer 2.
  • the condenser 6 is connected between the grid of the oscillation generator and the cathode and is of magnitude such that proper excitation is supplied to the grid of the oscillation generator.
  • the condenser 5 is of capacity equal to that of the condenser 6, so that the potentials across these two condensers are equal.
  • the capacity of the condenser 4 is such that the potential across the series combination 4, 5, 6 at the frequency of the oscillations to be produced is equal to the rated potential of the oscillation generator.
  • the grid of the oscillation generator will, of course, assume the necessary potential for excitation and, as characteristic of oscillation generators of this type, the potential across the oscillatory circuit will be maintained about equal over the entire range of frequencies produced.
  • the inductance 2 or condenser 3 be used to "ary the frequency the potential will remain substantially constant throughout the entire range of adjustment of either of these elements.
  • the grids of the push-pull amplifiers 10 and 11 are connected through suitable coupling condensers 21 and 22 to points on the oscillatory circuit, the former to the point between the condensers 4 and 5 and the latter to the grid connection of the oscillation generator.
  • an electron discharge oscillation generator having an anode, a cathode and a grid, an oscillatory circuit compris- 1ng an inductance and a capacity connected in parallel between said anode and grid, a pair of push-pull connected electron discharge amplifiers, each of said amplifiers havin an anode, a cathode and a grid, a connection rom the cathode of said amplifiers and said 0scillation generator to an intermediate point on said capacity and non-inductive connections from the grids of said amplifiers to opposite points on said capacity from said intermediate point.
  • an electron discharge oscillation generator having an anode, a cathode and a grid
  • an oscillatory circuit comprising an inductance and a capacity connected in parallel between said anode and grid, a pair of push pull connected electron discharge amplifiers, each of said amplifiers having an anode, a cathode and a grid

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)
US301331A 1928-08-22 1928-08-22 Coupling circuits Expired - Lifetime US1755865A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US301331A US1755865A (en) 1928-08-22 1928-08-22 Coupling circuits
FR680450D FR680450A (fr) 1928-08-22 1929-08-14 Perfectionnements aux circuits de couplage pour oscillateurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US301331A US1755865A (en) 1928-08-22 1928-08-22 Coupling circuits

Publications (1)

Publication Number Publication Date
US1755865A true US1755865A (en) 1930-04-22

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ID=23162899

Family Applications (1)

Application Number Title Priority Date Filing Date
US301331A Expired - Lifetime US1755865A (en) 1928-08-22 1928-08-22 Coupling circuits

Country Status (2)

Country Link
US (1) US1755865A (fr)
FR (1) FR680450A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901557A (en) * 1955-02-07 1959-08-25 Bendix Aviat Corp Oscillator and amplifier circuit
US2928050A (en) * 1956-11-14 1960-03-08 Westinghouse Air Brake Co Signal generator with supply voltage compensation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901557A (en) * 1955-02-07 1959-08-25 Bendix Aviat Corp Oscillator and amplifier circuit
US2928050A (en) * 1956-11-14 1960-03-08 Westinghouse Air Brake Co Signal generator with supply voltage compensation

Also Published As

Publication number Publication date
FR680450A (fr) 1930-04-29

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